Taylor Swift had the best birthday ever! And she celebrated her big 2-4 with a surprising new pal: Lorde!

Swift was in Australia for her birthday this year on the end of her Red tour before the holidays. Since she was in the Southern Hemisphere, it was actually summer! As a result, the 'Everything Has Changed' singer didn't build forts in snow -- instead she frolicked among flowers at a garden party in Melbourne.

Wearing an appropriately floral dress, Swift smelled roses, played with sparklers, canoodled with one of her dancers and hugged Lorde, 17, in many of her photos. Lorde herself posted a shot to Instagram of the celebrations (hers is the one of the tents and balloons below), but was careful to preserve Swift's privacy by captioning it, "Happy birthday friend." So thoughtful!

Swift was thrilled with the festivities, calling her 24th her "best birthday ever." Here's to one more, T-Swizzle!